Material dielectric constant testing system and testing method based on same

A technology of dielectric constant and testing system, which is applied in the direction of dielectric property measurement, measuring devices, and measuring electrical variables, etc., which can solve the problems of slow test speed, improve test speed, realize high-throughput experiments of materials, and high test efficiency Effect

Inactive Publication Date: 2016-10-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] In order to overcome the technical problem of slow testing speed of the existing material dielectric constant, the presen

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  • Material dielectric constant testing system and testing method based on same
  • Material dielectric constant testing system and testing method based on same
  • Material dielectric constant testing system and testing method based on same

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[0037] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] The first embodiment of the present invention provides a coaxial resonant cavity 10

[0039] combine figure 1 , figure 2 As shown, the coaxial resonator 10 includes a coupling mechanism 14 and a cavity 19 . The coupling mechanism 14 is used for excitation and coupling of microwaves in the cavity 19 , that is, to input microwaves into the cavity 19 to form the oscillation of the cavity 19 , and to couple and output microwave signals in the cavity 19 . The coaxial resonant cavity 10 further includes a probe 113 protruding from the cavity 19 , and the probe 113 is arranged ...

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Abstract

The invention relates to the technical field of microwave testing, and particularly relates to a material dielectric constant testing system and a testing method based on the same. The material dielectric constant testing system comprises a coaxial resonant cavity and a control system, wherein the coaxial resonant cavity comprises a cavity body and a probe reaching out of the cavity body; the control system is used for providing microwave input signals for the coaxial resonant cavity, the probe forms an electromagnetic field outside the cavity body, and a to-be-tested sample changes microwave output signals for the coaxial resonant cavity through interference with the electromagnetic field; and the control system analyzes and calculates the microwave output signals before and after the to-be-tested sample is placed to obtain the dielectric constant of the to-be-tested sample. The material dielectric constant testing system has the advantages that the data processing is simple; the testing efficiency is high; and the probe reaching out of the cavity body carried out scanning-type detection on the to-be-tested sample, and the testing speed is quick. The invention also provides a testing method based on the above material dielectric constant testing system. The testing efficiency is high, and the testing speed is quick.

Description

【Technical field】 [0001] The invention relates to the technical field of microwave testing, in particular to a material dielectric constant testing system and a testing method based on the testing system. 【Background technique】 [0002] The dielectric constant is an important electromagnetic parameter of the material. When the material is applied to the microwave technology field, the dielectric constant is the main basis for evaluating its performance. Therefore, it is of great significance to test the dielectric constant of the material. [0003] At present, the test methods for the dielectric constant of materials mainly include network parameter test method and resonant cavity test method. Network parameter testing methods include transmission line method, free space method, etc. The test sensitivity is low, and it is mainly used for testing high-loss microwave materials. The resonant cavity method has the advantage of high sensitivity, and it can be used not only for t...

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Application Information

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IPC IPC(8): G01R27/26
CPCG01R27/2617
Inventor 向勇王聪冯雪松刘芬芬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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